Steering switch device

Abstract

An upper plate portion having a pair of openings formed therein, an external surface portion inclined to the inner side from an upper end of the outer circumference of the upper plate portion toward the lower side of the case, and a holding plate portion protruding from an inner surface of the external surface portion toward the inner side are integrally provided in a case. A cover is inserted into the case from the sides of the upper plate portion and the holding plate portion to be integrated with the case constitute a switch housing. Operating knobs are fitted to the case from the upper sides of the openings to thus assemble a switch unit. The switch unit is fixed to the side portion of a pad portion of a steering wheel, so that the operating knobs protrude to a space between the inner circumference of a ring portion and the pad portion.

1. A steering switch device comprising a steering wheel in which a pad portion is connected to an inner side of an annular ring portion through spoke portions; a switch housing fixed to side portions of the pad portion; operating knobs arranged on a top surface of the switch housing; switch elements operated by the operating knobs; and a circuit substrate on which the switch elements are mounted, the switch housing comprising a case and a cover made of a synthetic resin which are integrally linked to each other,
 wherein an upper plate portion having the operating knobs arranged thereon, an external surface portion inclined inward from an upper end of an outer circumference of the upper plate portion toward a lower side of the case, and a holding plate portion protruding from an inner surface of the external surface portion toward an inner side to face the upper plate portion are integrally provided in the case, and 
 wherein the cover is inserted between the upper plate portion and the holding plate portion, a lower plate portion for fixing the circuit substrate is provided in the cover, and the lower plate portion is mounted on the holding plate portion. 
 
   
   
     2. The steering switch device according to  claim 1 ,
 wherein guide protrusions are integrally provided on a back surface of the lower plate portion, and cut-out portions into which the guide protrusions are inserted are formed in the holding plate portion. 
 
   
   
     3. The steering switch device according to  claim 2 ,
 wherein the guide protrusions have a leg portions, and the holding plate portion is sandwiched between the leg portions and the back surface of the lower plate portion when the guide protrusions are inserted into the cut-out portions. 
 
   
   
     4. The steering switch device according to  claim 2 ,
 wherein a driver is provided between the operating knobs and the switch elements, 
 an opening into which the driver is inserted is formed in the upper plate portion of the case, and 
 a guide portion that guides an ascending/descending movement of the driver is provided in an inner wall of the opening. 
 
   
   
     5. The steering switch device according to  claim 4 ,
 wherein openings are formed in the upper plate portion of the case so as to be adjacent to each other, and a plurality of operating knobs are provided on the upper plate portion so as to correspond to the plurality of openings, respectively. 
 
   
   
     6. The steering switch device according to  claim 1 ,
 wherein a driver is provided between the operating knobs and the switch elements, 
 an opening into which the driver is inserted is formed in the upper plate portion of the case, and 
 a guide portion that guides an ascending/descending movement of the driver is provided in an inner wall of the opening. 
 
   
   
     7. The steering switch device according to  claim 6 ,
 wherein a plurality of openings are formed in the upper plate portion of the case so as to be adjacent to each other, and operating knobs are provided on the upper plate portion so as to correspond to the plurality of openings, respectively.